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Holomorphic Filters for Object Detection

  • Marco Reisert
  • Olaf Ronneberger
  • Hans Burkhardt
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4713)

Abstract

It is well known that linear filters are not powerful enough for many low-level image processing tasks. But it is also very difficult to design robust non-linear filters that respond exclusively to features of interest and that are at the same time equivariant with respect to translation and rotation. This paper proposes a new class of rotation-equivariant non-linear filters that is based on the principle of group integration. These filters become efficiently computable by an iterative scheme based on repeated differentiation of products and summations of the intermediate results. Our experiments show that the proposed filter detects pollen porates with only half as many errors than alternative approaches, when high localization accuracy is required.

Keywords

Object Detection Object Center Equal Error Rate Image Transformation Invariant Treatment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Marco Reisert
    • 1
  • Olaf Ronneberger
    • 1
  • Hans Burkhardt
    • 1
  1. 1.University of Freiburg, Computer Science Department, 79110 Freiburg i.Br.Germany

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